Pentax R-422VN Instruction Manual page 50

Press the [F1] [MEAS] to measure the distance.
Press [ENT] to view the ADD/CALC. SELECTION
MENU screen.
Press [ENT] to view the RESULT COORD. OF
STATIONING.
The Station Coordinates are displayed. Result
coordinates of free stationing can be saved
for Station setup after pressing [F5] [ACCEPT].
Horizontal angle of the result coordinates will
be affected to the Station Point for measuring.
Press [F4] [COMPARE] to view the RESULT
COORD. OF STATIONING screen.
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